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Diversity and numbers of root-nodule bacteria [Rhizobia] in Polish soils

100%

Martyniuk S., Oron J., Martyniuk M.

Acta Societatis Botanicorum Poloniae

2005

tom 74

nr 1

Using a sand pouch-plant infection method, populations of several species of root-nodule bacteria (rhizobia) were enumerated in eighty soils collected throughout Poland. Rhizobium leguminosarum bv. viciae (symbionts of pea, faba bean, vetch) and R. leguminosarum bv. trifolii (symbionts of clover) were detected in 77 and 76 soils, respectively. Most of these soils contained moderate and high numbers of these species of the rhizobia. Symbionts of beans, R. leguminosarum bv. phaseoli, were assessed in 76 soils; of this number 15 soils had no detectable populations of bean rhizobia and in 40 soils high or moderate numbers of these bacteria were found. Bradyrhizobium sp. (Lupinus), root-nodule bacteria of lupine and serradella, were absent in 19 soils, out of 80 tested, and 34 soils were colonised by high or moderate populations of bradyrhizobia. Sinorhizobium meliloti, rhizobia nodulating alfalfa, were sparse in the examined soils; with 56 soil containing no detectable numbers of S. meliloti and only 6 soils harbouring high or moderate populations of this species. The estimated numbers of the rhizobia in the studied soils were also related to some physical and chemical properties of these soils.

Occurrence of arbuscular mycorrhizal fungi and nodules in the roots of twelve legume species in South-Western Saudi Arabia

80%

Mahdhi M., Tounekti T., Khemira H.

Acta Scientiarum Polonorum. Hortorum Cultus

2018

tom 17

nr 4

The tripartite associations of arbuscular mycorrhizal fungi (AMF), rhizobia and legumes play a vital role in preserving and even restoring fertility of poor and eroded soils. The present study attempted to quantify relationship between legumes and symbiotic microorganisms (rhizobia and mycorrhizal fungi) by describing the mycorrhizal status and the occurrence of nodualtion of legumes growing in different areas of Jazan. The effect of legume species on soil microbial biomass was also investigated. Mycorrhizal and nodulation intensity varied greatly between legume species. The higher number of nodules (14 nodules per plant) and mycorrhization intensity (54%) were registered in root of Argyrolobium arabicum. Rhizosphere soils of all legume species harbored higher AMF fungal spores than bulk soils. Our results suggest also a signiﬁcant effect of legumes species on soil microbial biomass. Thus, legume species investigated in this study are potentially useful for replanting and soil protection of most degraded regions of Saudi Arabia.

Ograniczanie wyników

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Acta Societatis Botanicorum Poloniae

1 Khemira H.

1 Mahdhi M.

1 Martyniuk M.

1 Martyniuk S.

1 Oron J.

1 Tounekti T.

1 2018

1 2005

Wyniki wyszukiwania

Diversity and numbers of root-nodule bacteria [Rhizobia] in Polish soils

Occurrence of arbuscular mycorrhizal fungi and nodules in the roots of twelve legume species in South-Western Saudi Arabia